Electrical stimulation system and method for stimulating nerve tissue in the brain using a stimulation lead having a tip electrode, having at least five electrodes, or both

摘要

An electrical stimulation system is provided for electrically stimulating target nerve tissue in a person's brain using a stimulation lead having a tip electrode, having at least five electrodes, or both. The system includes a stimulation lead adapted for implantation into the brain for electrical stimulation of target nerve tissue in the brain. The stimulation lead may include a tip electrode located at a distal tip of the stimulation lead and adapted to be positioned proximate the target nerve tissue in the brain and to deliver electrical stimulation pulses to the target nerve tissue in the brain. The stimulation lead may include at least five electrodes, one or more of which are adapted to be positioned proximate the target nerve tissue in the brain and to deliver electrical stimulation pulses to the target nerve tissue in the brain. The system also includes a stimulation source operable to generate the electrical stimulation pulses for transmission to the one or more electrodes, possibly including a tip electrode, of the stimulation lead to cause the one or more electrodes to deliver the electrical stimulation pulses to the target nerve tissue in the brain.